Прочитайте текст с пропусками, обозначенными номерами. Эти номера соответствуют заданиям А22-А28, в которых представлены возможные варианты ответов. Обведите номер выбранного вами варианта ответа. TEST  15 ( part 3)

How Does Wind Power Really Work?

    Wind power is going to be essential to our planet in the near future. But do you really know how wind  power  works? It  looks easy but there are several components involved A22 ................... generating wind power. This type of power can not only save us a good A23 ................... of money on our utility bills, but it will also play an important role in saving our planet.

    For many of us, wind just looks invisible and does not actually have any properties but in A24 ................... , air is a fluid that contains particles constructed of gas. We can turn these gas particles into power because as the wind gusts, kinetic energy is created, which then can be harnessed and changed over into power.

    Having access to wind is very essential for this operation to work but another indispensable ingredient is the blades that are used. Their design is very A25 ................... to the effectiveness of the turbine. The other important component is simply the size of the blade. The bigger the blade is, the more energy is seized and more power can be created for us in the form of electricity.

    Much also depends A26 ................... where you live to figure out the right blade size. In regions with low wind levels, small blades work better because more wind is required to push the larger turbine blades. In an area that is very windy, it is much better to use large blades in A27 ................... to use all of the wind available.

    This gives you the fundamental principles of how electricity is produced from the wind. Today is a fantastic time to do as much A28 ................... as you can about wind power so you will be able to make educated decisions in the future.